Made with the same vegetable oils used to formulate oil colors — namely linseed, safflower, and poppy — drying oils are used to modify the consistency and drying time of oil paints in much the same way as prepared mediums.

Refined Linseed Oil
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Winsor & Newton's most popular oil offers many of the same qualities as Winsor & NewtonCold Pressed Linseed Oil, but is slower-drying. Refined Linseed Oil is an alkali-refined oil of pale color that reduces oil color consistency and increases gloss and transparency.